Advent of Code - Day 2 Puzzle #1

function howMuchPaper(arr) {
  var newArr = [];
  var sum = 0;

  // turn each string into array value, remove the x and turn string into int.
  // turn each array item into an object with keys for l, w, and h
  function createObj(item) {
    var w = item.replace(/x/g, ' ').split(' ');
    for(var i = 0; i < w.length; i++) {
      w[i] = parseInt(w[i]);
    }
    newArr.push({length: w[0], width: w[1], height: w[2]});
  }
  var objects = arr.map(createObj);

  // iterate over each object
  // make new array of sq ft of l, w, h
  // sort the array to find the smallest and divide that by half to find area
  // add smallest area and sq ft of packages to sum
  function findSq(item) {
    var ref = newArr[newArr.indexOf(item)];
    var tArr = [];
    tArr.push((ref.length * ref.width) * 2, (ref.width * ref.height) * 2, (ref.height * ref.length) * 2);
    var smallest = tArr.reduce(function(a, b) {
    return a <= b ? a : b;
  });
    smallest = smallest / 2;
    sum += smallest;
    for(var i = 0; i < tArr.length; i++) {
      sum += tArr[i];
    };
  }

  var sq = newArr.map(findSq);

  return sum;
}

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